Below is a table showing which gases and vapors can be detected by which sensor in which range. The individual gas measuring systems, ordered by such categories as oxygen, explosive gases and vapors, toxic gases and vapors as well as explosion-proof systems, will be described in more detail on the following pages.
LEL = Lower Explosive Limit

Alcohol
Alcohol
Ammonia , NH₃
Benzine
Benzine
Chlorine , Cl₂
Carbon dioxide , CO₂
Carbon monoxide , CO
Hydrocarbon, genl.
Hydrocarbon, genl.
Methane , CH₄
Methane , CH₄
Methane , CH₄
Propane , C₃H₈
Propane , C₃H₈
Oxygen , O₂
Oxygen , O₂
Oxygen , O₂
Hydrogen sulphide , H₂S
Nitrogen dioxide , NO₂
Nitrogen monoxide , NO
Hydrogen , H₂
Hydrogen , H₂

0-100% LEL
0-50% LEL
0-100 ppm
0-100% LEL
0-50% LEL
0-10 ppm
0-3000 ppm, 0-5 Vol% and other
0-300 ppm
0-100% LEL
0-50% LEL
0-100% LEL
0-100% LEL
0-50% LEL
0-100% LEL
0-50% LEL
0-25% by vol.
0-100% by vol.
0-21% by vol.
0-50 ppm
0-50 ppm
0-50 ppm
0-100% LEL
0-50% LEL

Pellistor
Semiconductor
Electrochemical
Pellistor
Semiconductor
Electrochemical
Infrared
Electrochemical
Pellistor
Semiconductor
Infrared
Pellistor
Semiconductor
Pellistor
Semiconductor
Dynamic, ZrO₂ basis
Dynamic, ZrO₂ basis
Electrochemical
Electrochemical
Electrochemical
Electrochemical
Pellistor
Semiconductor